Chapter 9The Environmental Consciousness and the · Clearing or Emptying the Subconscient
Book 10. Part Three: Sadhana on the Physical, Subconscient · Section Four: The Subconscient and the Inconscient and the Process of Yoga
There is always a great deal to do in the subconscient, but if you specially feel it [the need to clear the subconscient], it must be that the time for clearing it has come. If the other parts keep open and responsive, this should not give too much trouble.
* It is only if the mind is silent that the subconscient can be empty. What has to be done is to get all the old ignorant unyogic stuff out of the subconscient.
* If the subconscient is emptied, it would mean that you have got beyond the ordinary consciousness and the subconscient itself is prepared to be an instrument of the Truth.